Italy's national soccer team coach Roberto Mancini has tested positive for COVID-19, the country's football federation (FIGC) has reported.
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On another day when the pandemic impacted on world sport, the FIGC said in a statement that the 55-year-old was asymptomatic and in self-isolation at home in Rome.
It could prove problematic for Italy, who have three fixtures in the next two weeks - a friendly against visiting Estonia on Wednesday followed by Nations League matches at home to Poland on November 15 and in Bosnia on November 18.
Meanwhile, Mancini's compatriot Valentino Rossi will return to MotoGP racing this weekend after recovering from a coronavirus infection.
The 41-year-old Italian twice tested negative on Thursday and Friday, allowing Rossi to reunite with his team, Monster Energy Yamaha, and take part in this weekend's Gran Premio de Europa in Valencia.
However, Yamaha said five staff members, including team boss Massimo Meregalli, were self-isolating and would miss the next two races at the Spanish circuit.
Rossi had tested positive for the virus on October 15 and spent the past weeks self-isolating at home in Italy.
In golf, Joaquin Niemann will miss next week's Masters at Augusta National after he tested positive for coronavirus.
Niemnann, who in September last year became the first player from Chile to win on the PGA Tour, was due to make his second Masters start next week.
All NFL games are on for this week despite a host of teams dealing with COVID-19 issues.
Depending on their situations, teams were either steering clear of or returning to their facilities on Friday with numerous teams having players and or staff members test positive for the virus.
The Pittsburgh Steelers were fined $US350,000 ($A481,576) for violating NFL coronavirus protocols after members of the team's coaching staff failed to wear face coverings at all times during Sunday's game at Baltimore.
Coach Jon Gruden came to the defence of his franchise despite the Las Vegas Raiders being hit with a hefty penalty of $US500,000 ($A687,966) and stripped of a sixth-round draft pick for various violations.
"I believe we're on the cutting edge of being the best at servicing players and I'll leave it at that," Gruden said.
Meanwhile, Justin Turner will not be disciplined by Major League Baseball for coming onto the field last week to celebrate the World Series title with his Los Angeles Dodgers teammates after testing positive for COVID-19.
He was earlier removed from Game 6 after seven innings when MLB informed the Dodgers of his positive test result.
Australian Associated Press